Guillermo R Trejo

M.A. MFT | Mental Health Counselor


  6738 Manassas Dr, San Antonio
     Texas, 78240-2843
  210-642-9483    Maps & Directions
Guillermo R Trejo is a San Antonio, Texas based counselor who is specialized as Mental Health Counselor. Active license number of Guillermo R Trejo is 98386 for Mental Health Counselor in Texas. His current practice location is 6738 Manassas Dr, San Antonio. Patients can book an appointment with him at 210-642-9483.
Guillermo R Trejo is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. He assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.
Complete Profile:
Guillermo R Trejo speciality, credentials, practice address, contact phone number and fax are as below. Patients can directly walk in or can call on the below given phone number for appointment.
Name: Guillermo R Trejo
Specialization: Mental Health Counselor
Gender:Male
Credentials: M.A. MFT
Accepts Medicare Assignment:No
Practice Address:6738 Manassas Dr, San Antonio,
Texas, 78240-2843
Phone:210-642-9483
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.
NPI Number: 1316802218
NPI Enumeration Date: 22 Dec, 2025
NPI Last Update On: 22 Dec, 2025

Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Guillermo R Trejo are as mentioned below.
License NumberSpecializationStateStatus
98386Mental Health Counselor TexasPrimary
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address: 6738 Manassas Dr,
San Antonio, Texas
Zip: 78240-2843
Phone Number: 210-642-9483
Patients can reach Guillermo R Trejo at 6738 Manassas Dr, San Antonio, Texas or can call to book an appointment on 210-642-9483.
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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 February, 2026.